net_wire/ethernet/
ether_type.rs

1/// A semantic Ethernet protocol type field.
2///
3/// The two-octet type field follows the destination and source addresses in the
4/// Ethernet encapsulation described by [RFC 894](https://www.rfc-editor.org/rfc/rfc894).
5#[repr(transparent)]
6#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
7pub struct EtherType(u16);
8
9impl EtherType {
10    /// The Internet Protocol version 4 EtherType (`0x0800`).
11    ///
12    /// RFC 894 specifies this value for IP datagrams on Ethernet; it is also listed in
13    /// the [IANA IEEE 802 Numbers registry](https://www.iana.org/assignments/ieee-802-numbers/ieee-802-numbers.xhtml).
14    pub const IPV4: Self = Self(0x0800);
15
16    /// The Address Resolution Protocol EtherType (`0x0806`).
17    ///
18    /// RFC 826 names `0x0806` as the Ethernet protocol type for ARP; it is also listed
19    /// in the [IANA IEEE 802 Numbers registry](https://www.iana.org/assignments/ieee-802-numbers/ieee-802-numbers.xhtml).
20    pub const ARP: Self = Self(0x0806);
21
22    /// The Internet Protocol version 6 EtherType (`0x86dd`).
23    ///
24    /// [RFC 2464 section 3](https://www.rfc-editor.org/rfc/rfc2464#section-3) specifies
25    /// this value for IPv6 packets encapsulated in Ethernet; it is also listed in the
26    /// [IANA IEEE 802 Numbers registry](https://www.iana.org/assignments/ieee-802-numbers/ieee-802-numbers.xhtml).
27    pub const IPV6: Self = Self(0x86dd);
28
29    /// Constructs a protocol type from its host-order 16-bit value.
30    ///
31    /// The value denotes the Ethernet type field defined by
32    /// [RFC 894](https://www.rfc-editor.org/rfc/rfc894).
33    #[inline]
34    pub const fn new(raw: u16) -> Self {
35        Self(raw)
36    }
37
38    /// Returns the host-order 16-bit value represented by this type.
39    ///
40    /// Ethernet transmits this value in its two-octet type field as described by
41    /// [RFC 894](https://www.rfc-editor.org/rfc/rfc894).
42    #[inline]
43    pub const fn raw(self) -> u16 {
44        self.0
45    }
46}
net_wire/ethernet/ether_type.rs

net_wire/ethernet/
ether_type.rs
